Electric illuminating device



1,530,862 T. J. THOMPSON ELECTRIC ILLUMINATING DEVICE- Filed June 9,1924 /11 l i A.

vMarch 24, 1925.

Y latented Mar. 24, 1925..

UNITED STATES PATENT oFFicr-z.

THOMAS J'. THOMPSON, OF CHICAGO, ILLINOIS, ASSIGNO-R TO STANDARD OILCOM- PANY, OF WBI'IING, INDIANA, AND CHICAGO, ILLINOIS, A CORPORATION OFIN- DIANA.

ELECTRIC ILLUMINATING DEVICE.

Applicationnled June 9,

To all whom it may concern:

Be it known that I, THOMAS J. TitolarsoN, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in ElectricIlluminating Devices, of which the following is a specification.

M invention relates to an improvement in t e class of hand-operateddevices for introduction of an incandescent electric lamp on one end ofthe device, in a batterycircuit thereon, into dark places to llluminatethe latter.`

My device, which is of peculiar and relatively inexpensive and simpleconstruction, is especially desi ed for insertion into receptacles incleaning them, and particularly into the steel barrels used for shippingliquid petroleum products, such as gasoline, kerosene and the like, fromthe refinery. These barrels require thorough cleaning before lling, andfor faciliating the work l have devised my medium to be withdrawablyinserted therein to illuminate them for ready and advantageousexploration of their interiors. p

My device affords a convenient tool for this purpose, and one which iscapable of being constructed from materials which are usually discardedor scrapped about a reinery-plant as being of but little, 1f any, value.Thus, the tubular handle-forming battery-containing portion of thedevice consists of short lengths of ordinary iron pipe, and thelamp-carrying tube of similar pieces of gas piping. I

In the accompanying drawing-- Figure 1 ,shows the device by a view inelevation, and

Figure 2 is an enlarged broken and mainly sectional view of the same,showing the parts substantially in their actual dimensions.

The tubular handle 3, which is shown at 3h1 in Fig. 1 to belongitudinally corrugated to afford a rm hand-grip, is preferably asection of iron pipe with its ends threaded for screwing thereon closingcaps 4 and 5. A relatively narrow tube 6, which is preferably a piece ofordinary gas-pipe of suitable length, say three feet or thereabout, isscrewed at one end into the cap 5. A bushing 7, secured to extendthrough the wall of the cap 5 in position diametrically op- 1924. SerialNo. 718,826.

positc the connection therewith of the pipe 6, carries within the cap ahollow body 8 of insulating material divided by a'perforatcd partition8n into chambers 8b and 8. A spring-pressed push-button 9 works in thechamber 8b through the bushing 7 and partition 8, and projects intoposition to be conveniently operated by the user of the device4 whenheld at the handle 3 in one hand. In the .handle .is confined the sourceof electrical energy, represented as a pair of ordinary drystorage-batteries 10, 10 in electrical end-to-end contact, the terminal11 of the leading battery engaging a contact-button 12 carried on a disk13 of insulating material confined about its edge between the adjacentend of the tubular handle 3 and a ange 12 in the cap 5.

On the advance-end of the pipe 6 is provided a cage-like shield 14terminating in an abutment-ring 111a and containing and protecting thebulb 15 of an incandescent electric lamp in its usual socket, with theterminals in which latter insulated wires 16 and 17 are connected, thesewires passing through the pipe 6 and projectin into the cap 5. Theelectrical circuit is ormed by an insulated wire 16 connecting therearmost battery 10 with the end in the cap of the wire 16, of which thewire 16a is a continuation; and through the base of the body 8 thereextend into the chamber 8 the similar spring-contact terminals 18, 18 tobe engaged by the push-button, the wire ,17 being connected with theprojecting end of one of these arms, the corresponding end of the otherarm being connected with the button 12 by a section of insulated wire18a.

To apply the device to its purpose, the user holding it at the handle 3inserts the pipe 6 into the interior of the object to be illuminated,and closes the circuit at the push-button 9 to light the lamp.

I realize that considerable variation is possible in the details ofconstruction of In improved device thus shown and described. and I donot intend to limit my invention thereto except as pointed out in theappended claims, in which it is my intention to claim all the noveltyinherent in my in- 105 tube, caps closing the ends of thel tube, one ofsaid caps carrying a chambcred'body-of insulating material and heiligprovided with openings, a pipe seated in oneof said openings andentending at an angle to. the c ap, terminals in said cap, acircuit-closing push-button extending through an opening in the cap andadapted, when pressed inwardly, to contact with said terminals, a lampcarried by the free end of the tube, and conducting wires leading fromsaid lamp to the terminals, battery and button.

il. An electric illuminating device 'comprising a handle-forming tubecontaining a battery, a cap on an end of said handle, a

into said body through its opposite end and` a pipe with one of whichsaid button is electrically connected, and conducting. wires leadingthrough the pipe and respectively connecting said lam with the otherterminal and through the attery with said button.

3. An electric illuminating device comprising a handle-forming tubecontaining aA battery, a capon an end of said handle, a disk ofinsulating material conined by the cap against said end of the tube andcarrying a button contacting with the adjacent battery-terminal, a pipeextending at an angle to the handle from the cap thereon and carrying ashield-surrounded incandescent electric lamp on its advance-end,push-button circuit-closing means including saidl button in the cap,andconducting wires leading through the pipe and respectively connectingthe lamp with one. terminal of said circuit-closing means and indirectlywith the other terminal thereof through the battery and said button.

THOMAS J. THOMPSON.

